self tap in screws and flues

[ambrosia]

how many of you put self tap in screws in all flues on new boiler installations

as far as i'm aware, vaillant are the only ones which come with the screws, but you still see so many ecotecs without the screws put in

 

[Rickster123]

Baxi and Worcester do too now. If it's in the mi then it needs screwing. I can't see anyone getting grief for screwing and clamping a flue either way tho.

 

[ShaunCorbs]

i do gets screwed 6times per joint cost about 3 for 100

 

[townfanjon]

Viessmann dont want screws

 

[ambrosia]

that i didnt know,
that said i've never installed a viessmann

 

[ShaunCorbs]

Viessmann dont want screws

yes they do says in mis atleast 3

 

[townfanjon]

What !

 

[ShaunCorbs]

What !

for all models and lengths

 

[Rickster123]

What !

Dear mr gas safe inspector...

 

[ShaunCorbs]

Dear mr gas safe inspector...

+1 and gas safe require screws at-least 2 per joint